NSW Has the Highest Marriage Rate in Australia. Nobody's Framing That as a Housing Story.

Let's start with the number that sounds like a win for Sydney.

New South Wales has consistently posted the highest crude marriage rate of any Australian state or territory, according to analysis from the Australian Institute of Family Studies, which tracks ABS marriage data by state over time. In the 2025 Census, 42.5% of NSW residents aged 15 and over were married, with 11.9% divorced or separated, according to ABS figures. On the numbers Australians usually cite when they talk about which state "has it together" on relationships, NSW wins.

The number that should sit right next to it almost never does: Sydney is also the least affordable major city in the country to actually live in while you're trying to get there.

The median house price in Sydney now sits at roughly $1.44 million to $1.6 million, depending on the source, with a price-to-income ratio near 9:1 — among the most expensive housing markets in the world, according to CoreLogic and Domain data. Comfortably affording a median mortgage now requires a household income approaching $280,000 a year. Renting isn't the relief valve it used to be either: Sydney remains the most expensive city in Australia to rent in, at roughly $780 a week for a house and $750 for a unit, according to Domain's September 2025 rental report. Anglicare's 2025 Rental Affordability Snapshot found zero affordable rental properties anywhere in Greater Sydney for a single person on JobSeeker, and zero nationally for a single person on Youth Allowance.

So the marriage rate and the affordability numbers are both real, and both describing the same city, and they point in opposite directions for two very different groups of Sydneysiders.

This is where the state-level marriage stat starts to mislead more than it informs. A crude marriage rate counts marriages against total population — it says nothing about who's marrying, at what age, or with what financial head start. Multi-generational living is rising sharply across Sydney as adult children stay in the family home longer and extended families consolidate under one roof simply to make the math work, according to housing market analysis of the city's 2025 trends. Meanwhile, a 2025 survey by recruitment firm Robert Walters found 54% of Australian workers are actively planning to move interstate in search of better pay or affordability — and housing researchers have started referring to under-35s leaving cities like Sydney as the "Exit Generation." Economists tracking the national housing market have specifically flagged Sydney as the city most vulnerable to further affordability stress, more exposed than Melbourne or Brisbane to any tightening in financial conditions.

Put together, the picture isn't "NSW is good at marriage." It's closer to: the people with the resources to clear Sydney's cost of entry are still forming households and marrying at strong rates, while an entire cohort below them — renters, first-generation buyers, the demographic that would normally be dating, moving in together, and eventually marrying in their late twenties and early thirties — is stuck in a housing market with, in the most extreme cases, literally no affordable options at all. The marriage rate reflects the city's winners. It says very little about everyone still trying to reach the starting line.

That distinction matters for anyone actually dating in Sydney right now, because it means the usual read on the data — "this is a good state for relationships" — isn't wrong so much as incomplete in a way that specifically hides the group most in need of good information. If you're renting, sharing a house in your late twenties, or watching friends leave for Brisbane or interstate because the math here doesn't work, the state's marriage rate isn't describing your market. It's describing a different one, sitting on top of yours, with a much higher cost of admission.

Sydney isn't a city where people don't want to build a life with someone. It's a city where an increasing share of the population capable of dating seriously is being asked to solve a housing problem before they're even allowed to try solving a relationship one — and the marriage statistics that make headlines are, almost by construction, describing the people who already solved it.